Henry I, king of Castile (died 1217)

Henry I of Castile was King of Castile. He was the son of Alfonso VIII of Castile and Eleanor of England, Queen of Castile. He was the brother of Berengueia and Mafalda of Castile.

The Kingdom of Castile was a polity in the Iberian Peninsula during the Middle Ages. It traces its origins to the 9th-century County of Castile, as an eastern frontier lordship of the Kingdom of León. During the 10th century, the Castilian counts increased their autonomy, but it was not until 1065 that it was separated from the Kingdom of León and became a kingdom in its own right. Between 1072 and 1157, it was again united with León, and after 1230, the union became permanent.

April 14 is the 104th day of the year in the Gregorian calendar; 261 days remain until the end of the year.